LEMON Manuals
: Even more car manuals for everyone: 1960-2025
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Hummer
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2009
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H3 Base, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls And Fuel - 3.7L - DTC P0013 To DTC P0315
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DTC P0068 or P0121
>>
DTC Descriptors
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DTC Descriptors
DTC P0068
Throttle Body Airflow Performance
DTC P0121
Throttle Position (TP) Sensor 1 Performance